Art Updates

I've done a quick update to the art, I was noticing when capturing gifs that a lot of the silhouettes were being lost. However, the game is nowhere near ready for "Real art", so instead I just quickly made a new grunge shader for the background, and adjusted the lighting. I've also changed the shader on the characters and saturated and contrasted the characters, allowing them to 'pop' a lot more.

Additional Notes

- New custom scenery shader - New shader's for characters, modified textures - New scene lighting system - Changed fast crab to be more recognisable - Additional optimisation, bringing build down to 41mb (previously 61) - UI fixes

Let me know what you think!